Casement-window stay



Patented July 218,1 1925.

^ THoMAs HoRA'rIoN-Enson, kor VWELIJIivorfio'NQNEW ZEALAND. l.

cAsEMENT-Wmnow isitfA'Y."r

Applicationr inea November 5V, 1,923. sriaifnaefzaaa: f i

To all whom t may concern Y Be it known that I,"THoMAs"I1IoRAT'I0 NELSON, subject of the King'of Gjreat Brit- Y ain, residing at Seatoun, lVellington, in the Dominion ofNew Zealand, have invented a new and useful Iinproved vCasement-fin dow Stay,of which the following is a `specification. i. f t y This. invention Yrelates t'o an im-proved construction of stay for use in-.holdin'g 'casement and like hinged windows and iittings in a more or less open condition.` The lconstruction devised relates to that known class of device in which the stay is forrnedbya bar that is hinge jointed to the sash Vso that itmay turn either up and down or may swing sideways `and that is formed with notches on one edge, and is combined with `a guide aixed to the" windowvfrarne and ythrough which the bar lis'adapted to slide freely. The guide is,provided with a5V pin or toothextending across'the notched edge ofthebar and adapted to. fit intoI 'any-lone vof the notches, andsaidfg-uide also hasa spring controlled presser lfrainef bearing upon the other edgeof the bar Aand forcing the notched edge against the said pin.; The

--bar is freed to slidervthrough the guide' by pulling its end sideways against thespring presser fraine rand thereby freeing the notches froin'the pin andr while thus pulled sideways, it is slid through theguide to the required position, when-upon releasing it, the spring will press the bar across and causeV the appropriate notch to Y engage `the lpin and hold thegbar as desired.

The invention has been devised'in order `to provide improvements in such a forni ofl .frame in. the closing thereof is drawn closely into its closed position and is at the l saine time securely locked in such position against any possibility ofbeing accidentali)7 opened from the inside and yaltogether i against 4being opened from theoutside. L

l tions. I

through,

' i This censtructionl illustrated r.in i

companying drawings in which'- Figure l is a planview of 'the stay in the closed. ,nd lo ked position.v

y FigureQfijs'ja plan, and 'l l ',Fignre 3 a side view, of the stay bar and fitted lfor use and showingholdinga sash "l its guidevfin4 fthein'relative "working posi.

` Figurew't` is' a sectional' plan, fon, an Venlargedrscale, of the guide", showing the stay bar thereln vand 1n the locked position.

Figure 5 1s a front elevation, alsoon an,

stay 'bar yin cross section vpassing there- The appliance adapted for fitting upon venlarged scale,of thefguide showing the thejsill of a frame forus'e with ay sashv hung A a yvertical side of the framelfor use with a sash 'hung in either 'of' such ways,""but preferably Yon the side when being usedwitha 'upon either vertical or horizontal hinges `within suchfrarne,lo`r itinay be fitted upon sash hung upon vertical hinges# 'This is the mannerin which itl is shown'V ,fitted in Figure 17 of the "drawings,y A representing -the lsash frame and BtheInain frame 'fof the window. The construction is' also such that the appliance'may 4be tted to either a right orxleft'hand sash, at will. In carrying out the invention, a'stay bar `C of approved metal and o f the required length, is provided. This bar ispivotally so p attached vat one end to a short bar' or block D in such a Inanner that it may turn up or tov the sash franie Al' 'Tl'ie'stay bar isthus capable'of swinging sideways or of'turning "up and down in re1atio1rtof'its attachment to the i sash.`

'Ihe inner edge ofthe bar'flv'isinade with y notches c" at :approved intervalsfapart i along its'length, 'f l' Combined with the "stay iailguide F 'the window frame B and is secured to such frame by screws or the like passing through a bearing plate F formed integral with the guide. This guide is made as an lenclosed frame and it is positioned on the level of the stay bar connection with the sash frame so that such bar may slide horizontally in a longitudinal direction through the guide. The inner side of the space enclosed by the guide has a pin G fixed to extend vertically through the height of the guide, said pin being made of such 'a diameter that it Vmay fit into any one of thenotches c of the bar C.

Fitted into the outer part ofthe guide is.

a presser frame formed by a plate J that extends for a distance parallel with the edge of the barC and has itsends carried out in parallel lines to pass one on each side of the outer end of theguide and then bent inwards on the outside towards one another. This presser plate, or frame, is thus capable of mo-ving laterally in the guide but it is kept pressing against the barkC by means of the helical spring K fdisposed'between it and the outer member of the guide. This spring is thus confined between the sides of the guide and the side extensions of the presser plate so that it always remains in position. l

The .pressurey of the spring K will therefore serve to force the bar C laterally across with its notched edgev hard against the pin Cr in order that the stay will lock at any notch placed opposite the pin. Thus in the voperation of the stay, it may be freed from engagement with the pin by levering it to one side against the action of the presser plate and while being thus held, pushing it out or drawing it in through the guide to open or close the sash.

When the window is completely closed the short block or bar 'D will extend into the guide and as this isalso formed with a notch it will lock uponthe pin Gr. The bar C will then be free, to turn down. upon its pivotal attachment to the block so that it is out of the way. The bar also may be slid right through the guide to leave the sash free to open out and when thus freed from the guide, it will swing down against the sash, so that in each instance it Ais not left projecting in the way.

The manner in which thebar is connected to the sash and in addition also, the freedomof movement allowed the presser plate and the lateral movement of the bar in the guide, will compensate fully for the varying angles assumed by the bar as it moves in and out Y Ythrough the guide.

The turning of the bar downward will cause it to exert a leverage action on the guide to draw the sash A closely home. YProvision .is made to lock the bar from moving sideways in the guide to free the sash, until the bar has been turned up to the straight position again. This consistsin forming the guide on its top and bottom edges facing inwards with shoulders M thereon, in a position such that the bar C .when turned down, as shown in Figures 1 to straightenthe bar oni'ts pivot.

The act of drawing the sash bar in through the guide and then releasing it so that it may drop on its hinge will serve by the mere weight of the bar to automatically pull the sash to its tight position and then to lock itself in such closed position.`

This construction also allows for the 'sash being closed and locked by pressure from the outside, as if sufficient force is exerted upon it, the bar will run through the guide, the spring giving'way, and will then drop down and lockV in the manner described.

In some cases, and'particularly with long bars, the bar may be formed with a one way hinge joint at about midway in its length, as shown by the dotted lines at in Figure 2 of the drawings. This will allow for the inner half hanging vertically down when the stay is pushed outwards half way, or

less.

It will readily be seen that the construction shown may be used either on its side, as shown inthe drawings, or on the flat s0 that the stay will swing in a horizontal plane, and that when arranged on its side it may be used either for left or right hand sashes by merely reversing it to suit.

In some cases, as when the appliance is fitted to a fanlight and theguide is xed on the sill, the bar may act by its own weight instead of being spring controlled.

I claim: Y

1. A stay for hinged window sashes and the like, comprising a bar connected at one end to the sash by pivot joints disposed to permit of the bar .swinging laterally, or up and down, one edge of said bar being formed with notches at intervals in its length, a guide xed to the window frame and through which the bar is passed, such guide being formed by a hollow frame made with a face plate portion on its inner side, a presser guide frame fitted in the outer part of the guide frame and adapted to move laterally therein, a spring in compression disposed between the outer end of the guide 'frame and the inner end ofthe presser frame, and a pin extending across between the guide frame sides at Vthe inner part l thereof.l

with a shoulder onk the one edge'thereof'and the bar, athinge in thesteyl'bar positioned .Y i positionedat a distance from the inner end to allow the bar tov turn in against. the guide 10 of the said frame corresponding with the side, and shoulders on such guide adapted Width of the stay bar. t. to engage `:ind hold the bar'when thus turned 5 3. In a casement and likestay, a hinged in` and prevent its lateral movement in the' stay bar attached to the sash, a guide atguide. v e Y l l tached to the frame and through Which Such In testimony whereof, I affix my signature.

bar slides and having means for engaging THOMAS HORATIO N'ELSYYON. v 

